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Finding the Fourth Proportional to 252.81, 379.44 and 192.69

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Solution

The fourth proportional to 252.81, 379.44 and 192.69 is: 289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.81 : 379.44 = 192.69 : x
  2. Step 2: Convert to fraction form
    252.81/379.44 = 192.69/x
  3. Step 3: Cross multiply
    252.81x = 379.44 × 192.69
  4. Step 4: Simplify right side
    252.81x = 73,114.29
  5. Step 5: Solve for x
    x = 73,114.29/252.81
  6. Step 6: Final answer
    x = 289.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.